Jùshuō hétóng tóudǐng yǒu yī gè zhuāng shuǐ de diézi.
It is said that kappa have a water-filled dish on top of their heads.
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culture
河童 (kappa) is a well-known creature in Japanese mythology — child-sized, reptilian, and aquatic. They are known for pulling people into water. The word is written the same in Chinese characters as in Japanese kanji (河童).